Primary DNS — Enter the value that a requesting network host will receive for the primary DNS server it should use.

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Secondary DNS — Optionally, enter the value that a requesting network host will receive for the secondary DNS server it should use.

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Default gateway — Enter the value that a requesting network host will receive for the default gateway it should use.

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Enabled — New DHCP subnets are enabled by default. Clear the selection to disable this subnet.

5.

For further network settings, click Advanced. Configure the following:

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Primary WINS — Optionally, enter the value that a requesting network host will receive for the primary WINS server it should use. This is often not required on very small Microsoft Windows networks.

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Secondary WINS — Optionally, enter the value that a requesting network host will receive for the secondary WINS server it should use. This is often not required on very small Microsoft Windows networks.

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Primary NTP — Optionally, enter the IP address of the Network Time Protocol (NTP) server that the clients will use if they support this feature.

Tip: Enter the Smoothwall System’s IP address. Clients can use its time services if enabled — see Setting the System Time.

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Secondary NTP — Optionally, enter the IP address of a secondary Network Time Protocol (NTP) server that the clients will use if they support this feature.

Tip: Enter the Smoothwall System’s IP address. Clients can use its time services if enabled — see Setting the System Time.

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Default lease time (mins) — Enter the lease time in minutes assigned to network hosts that do not request a specific lease time. The default value is usually sufficient.

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Max lease time (mins) — Enter the lease time limit in minutes to prevent network hosts requesting, and being granted, impractically long DHCP leases. The default value is usually sufficient.

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TFTP server — Enter which Trivial File Transfer Protocol (TFTP) server workstations will use when booting from the network.

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Network boot filename — Specify to the network booting client which file to download when booting off the above TFTP server.

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Domain name suffix — Enter the domain name suffix that is appended to the requesting host's hostname.

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Automatic proxy config URL — Specify a URL which clients will use for determining proxy settings. Note that it should reference an proxy auto-config (PAC) file and only some systems and web browsers support this feature.

6.

Click Save.

Note: For the DHCP server to be able to assign these settings to requesting hosts, further configuration is required. Dynamic ranges and static assignments must be added to the DHCP subnet so that the server knows which addresses it should allocated to the various network hosts.

Static assignments are used to allocate fixed IP addresses to nominated hosts. This is done by referencing the unique MAC address of the requesting host’s network interface card. This is used to ensure that certain hosts are always leased the same IP address, as if they were configured with a static IP address.